IRR Sd1806 over Straight Ck
Fair Condition29 years old161 vehicles/day
Location
| State | South Dakota |
| County | Lyman |
| Location | 6.7 NW Jct Sd 273 |
| Carries | IRR Sd1806 |
| Crosses | Straight Ck |
| Coordinates | 44.14853, -99.93543 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 56.1 ft (17.1 m) |
| Max Span | 51.8 ft (15.8 m) |
| Deck Width | 38.7 ft (11.8 m) |
| Deck Area | 201.8 sq m |
| Main Spans | 1 |
| Year Built | 1997 |
Traffic
| Avg Daily Traffic | 161 (2024) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000043216034 |